Porphyry copper deposit in Utah, United States

Names and other identifiers

Tract name Great Basin Tertiary (003pCu9013)
Site status deposit

Geographic location

Country United States
State or province Utah
Geographic location -113.299722222, 38.480555556
Geologic map unit -113.299722222, 38.480555556
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 28Ma
Age determination method unknown
Age range 28 Ma
Age reference Singer and others (2008)
Minerals actinolite, azurite/malachite, biotite, chalcocite, chalcopyrite, chlorite, chrysocolla, covellite, cuprite, epidote, kaolinite, limonite, magnetite, molybdenite, powellite, pyrite, sericite, tourmaline
Associated rocks aplite, breccia, andesite, dacite, dolomite, limestone, quartz latite, quartz monzonite
Tectonic setting postconvergence
Stratigraphic age Oligocene

Commodity and development information

Development status Producer
Major commodities Cu
Tonnage (Mt) 10Mt
Cu grade (%) 0.5%
Mo grade (%) 0.023%
Contained copper 50,000t
Gold-Moly ratio -9999

Reference information

Comments Production: ~ 7,000 t Cu.
Study area name United States
References Barosh (1960); Lemon and others (1973); Taylor (1984); Taylor (1987); Singer and others (2008)
Site reference U.S. Geological Survey National Mineral Resource Assessment Team (2002)
Barosh, P.J., 1960, Beaver Lake Mountains geology and ore deposits, Beaver County, Utah: Utah Geological and Mineral Survey Bulletin 68, 96 p.
Lemon, D.M., Silberman, M.L., and Kistler, R.W., 1973, Some K–Ar ages of extrusive and intrusive rocks of the San Francisco and Wah Wah Mountains, Utah, in Geology of the Milford area: Utah Geological Association Publication 3, p. 23–26. (Also available at http://archives.datapages.com/data/uga/data/089/089001/pdfs/23.pdf.)Singer, D.A., Berger, V.I., and Moring, B.C., 2008, Porphyry copper deposits of the world—Database and grade and tonnage models, 2008: U.S. Geological Survey Open-File Report 2008-1155, [45] p. and digital data, accessed December 31, 2013, at http://pubs.usgs.gov/of/2008/1155/.
Taylor, T.W., 1984, A petrological and geochemical study of the O.K. copper-molybdenum deposit, Beaver county, Utah [abs.]: Geological Society of America Abstracts and Program, v. 16, no. 4, p. 257.
Taylor, T.W., 1987, Petrology and geochemistry of the O.K. copper-molybdenum deposit, Beaver county, Utah: Utah Geological and Mineral Survey Special Studies 69, p. 27–39.